South Umpqua HUC8 17100302
A 4,665 km² sub-basin of the Pacific Northwest region in OR. Drought coverage is from the US Drought Monitor (map of 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
42
Stressed
Drought index
293
Severe
Area in D2+
93.49%
0% exceptional (D4)
Gauges below normal
71%
of 7 reporting
Median flow
55%
p8 of record
Water assets
354
144 springs · 133 wells
USGS gauges (9)
- WEST FORK COW CREEK NEAR GLENDALE, OR143095005 cfsp8 · much below normal
- SOUTH UMPQUA RIVER NEAR BROCKWAY, OR1431200095 cfsp8 · much below normal
- SOUTH UMPQUA RIVER AT TILLER, OR1430800034 cfsp8 · much below normal
- COW CREEK ABV GALESVILLE RES, NR AZALEA, OR.143089906 cfsp8 · much below normal
- ELK CREEK NR DREW, OR143085001 cfsp22 · below normal
- COW CREEK NEAR RIDDLE, OR1431000066 cfsp38 · normal
- COW CREEK NEAR AZALEA, OR1430900044 cfsp69 · normal
- S UMPQUA RIVER AT CANYONVILLE, OR1430891029 cfsno long-term record
- SOUTH UMPQUA RIVER AT MELROSE, OR14312330128 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 293 | 93.49 | 5/7 | p8 |
| 2026-10-18 | 293 | 93.49 | 5/7 | p9 |
| 2026-10-17 | 293 | 93.49 | 5/7 | p9 |
| 2026-10-16 | 293 | 93.49 | 5/7 | p9 |
| 2026-10-15 | 293 | 93.49 | 5/7 | p9 |
| 2026-10-14 | 293 | 93.49 | 5/7 | p9 |
| 2026-10-13 | 293 | 93.49 | 5/7 | p10 |
| 2026-10-12 | 293 | 93.49 | 5/7 | p9 |
| 2026-10-11 | 293 | 93.49 | 5/7 | p8 |
| 2026-10-10 | 293 | 93.49 | 5/7 | p9 |
| 2026-10-09 | 293 | 93.49 | 5/7 | p9 |
| 2026-10-08 | 293 | 93.49 | 5/7 | p10 |
| 2026-10-07 | 293 | 93.49 | 5/7 | p10 |
| 2026-10-06 | 293 | 93.49 | 4/7 | p12 |
Top water assets
- 762 Unn Strs — Miningspring
- 76Cow Creek — Irrigationspring
- 76Starveout Creek — Miningspring
- 73Cow Creek — Irrigationspring
- 73Cow Creek — Industrial/Manufacturing Usesspring
- 73Lehman Reservoir — Miningspring
- 73Cow Creek — Irrigationspring
- 73Cow Creek — Irrigationspring
- 73Pit Well — Commercial Useswell
- 73South Umpqua River — Irrigationspring